Home / 12,275.22-18,440.55-7,280.87

Finding the Fourth Proportional to 12,275.22, 18,440.55 and 7,280.87

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Solution

The fourth proportional to 12,275.22, 18,440.55 and 7,280.87 is: 10,937.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.22 : 18,440.55 = 7,280.87 : x
  2. Step 2: Convert to fraction form
    12,275.22/18,440.55 = 7,280.87/x
  3. Step 3: Cross multiply
    12,275.22x = 18,440.55 × 7,280.87
  4. Step 4: Simplify right side
    12,275.22x = 134,263,155.08
  5. Step 5: Solve for x
    x = 134,263,155.08/12,275.22
  6. Step 6: Final answer
    x = 10,937.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.